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Open Access Green as soon as Postprint is submitted to ZB.
Online measurement of unattached and total radon and thoron decay products.
Appl. Radiat. Isot. 67, 843-848 (2009)
Radon and thoron decay products appear in two size modes: unattached and attached to aerosol particles. They deposit at different regions of the human respiratory tract causing different inhalation doses. A separate measurement of the concentration of both modes is realized by a new device based on a working level monitor and screen sampling. In addition, a new operation and evaluation procedure of the working level monitor is described to identify the thoron decay products (212)Pb and (212)Bi separately. First measurements reveal consistent results. The developments in measurement technique will enhance radon and thoron dose assessment.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Radon decay products; Thoron decay products; Working level monitor; Pb-212; Bi-212; indoor; air; fraction
ISSN (print) / ISBN
0969-8043
e-ISSN
1872-9800
Journal
Applied Radiation and Isotopes
Quellenangaben
Volume: 67,
Issue: 5,
Pages: 843-848
Publisher
Elsevier
Publishing Place
Oxford
Reviewing status
Peer reviewed
Institute(s)
Institute of Radiation Protection (ISS)